Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function arrayExists (children 1)
      ExpressionList (children 2)
       Function lambda (children 1)
        ExpressionList (children 2)
         Function tuple (children 1)
          ExpressionList (children 1)
           Identifier x
         Function equals (children 1)
          ExpressionList (children 2)
           Literal UInt64_5
           Identifier x
       Function materialize (children 1)
        ExpressionList (children 1)
         Function range (children 1)
          ExpressionList (children 1)
           Literal UInt64_10
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_10
